add landtag feed with AW API polls, extend FeedItem for session/decision kinds

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/features/feed/lib/assemble-feed.ts

@@ -14,13 +14,14 @@ export interface FeedTopicRef {
 
 export interface FeedItem {
 	id: string
-	kind: "poll" | "vorgang"
+	kind: "poll" | "vorgang" | "session" | "decision"
 	status: "upcoming" | "past"
 	title: string
 	url: string | null
 	date: string | null
 	topics: FeedTopicRef[]
 	source: string
+	result?: "accepted" | "rejected" | "conducted" | "referred" | null
 }
 
 function classifyPoll(poll: Poll): "upcoming" | "past" {